전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제61권8호
  • /
  • Pages.1179-1185
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  • 2012
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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시간-주파수 누적 변화량과 가변 임계값을 이용한 지진 이벤트 자동 검출 알고리즘

Earthquake Event Auto Detection Algorithm using Accumulated Time-Frequency Changes and Variable Threshold

  • 최훈 (동의대학교 전자공학과)
  • 투고 : 2012.03.29
  • 심사 : 2012.07.17
  • 발행 : 2012.08.01
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초록

This paper presents a new approach for the detection of seismic events using accumulated changes on time-frequency domain and variable threshold. To detect seismic P-wave arrivals with rapidness and accuracy, it is that the changes on the time and the frequency domains are simultaneously used. Their changes are parameters appropriated to reflect characteristics of earthquakes over moderate magnitude(${\geq}$ magnitude 4.0) and microearthquakes. In addition, adaptively controlled threshold values can prevent false P-wave detections due to low SNR. We tested our method on real earthquakes those have various magnitudes. The proposed algorithm gives a good detection performance and it is also comparable to STA/LTA algorithm in computational complexity. Computer simulation results shows that the proposed algorithm is superior to the conventional popular algorithm (STA/LTA) in the seismic P-wave detection.

키워드

참고문헌

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피인용 문헌

  1. Network Configuration, Time Management, and Data Storage for Urban Earthquake Disaster Preventing System vol.63, pp.12, 2014, https://doi.org/10.5370/KIEE.2014.63.12.1675